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Evidence that cytokines play a role in rheumatoid arthritis
Fionula M. Brennan, Iain B. McInnes
Fionula M. Brennan, Iain B. McInnes
Published November 3, 2008
Citation Information: J Clin Invest. 2008;118(11):3537-3545. https://doi.org/10.1172/JCI36389.
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Review Series

Evidence that cytokines play a role in rheumatoid arthritis

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Abstract

A large number of cytokines are active in the joints of patients with rheumatoid arthritis (RA). It is now clear that these cytokines play a fundamental role in the processes that cause inflammation, articular destruction, and the comorbidities associated with RA. Following the success of TNF-α blockade as a treatment for RA, other cytokines now offer alternative targets for therapeutic intervention or might be useful as predictive biomarkers of disease. In this Review, we discuss the biologic contribution and therapeutic potential of the major cytokine families to RA pathology, focusing on molecules contained within the TNF-α, IL-1, IL-6, IL-23, and IL-2 families.

Authors

Fionula M. Brennan, Iain B. McInnes

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Figure 1

Cytokine targets in RA.

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Cytokine targets in RA.
This figure summarizes the cellular interactions...
This figure summarizes the cellular interactions believed to be of importance in the pathogenesis of RA and describes the interaction among macrophages, T cells, B cells, and nonhematopoietic cells (fibroblasts, connective tissue cells, and bone). These interactions are facilitated by the actions of cytokines released from the activated cells that then, through both autocrine (feedback on same cell) and paracrine (via other cell types) mechanisms, induce the production of other proinflammatory cytokines, which together contribute to the pathogenesis of this disease. Based on ex vivo studies from diseased tissue and in vivo studies on animal models, those cytokines with pathogenic potential have been identified and biological therapies developed to block their action. This figure identifies those therapeutic modalities and the stage in clinical development that these interventions have reached. sIL-6R, soluble IL-6 receptor.

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